wlan: Protect wlan_hdd_cfg80211_change_iface function from SSR
Protect wlan_hdd_cfg80211_change_iface function from accessing
uninitialized or deallocated data structures while SSR is in
progress.
Change-Id: I3472eccc41d2a6f2f4526d99dacbb8bbde61aaab
CRs-Fixed: 633889
diff --git a/CORE/HDD/src/wlan_hdd_cfg80211.c b/CORE/HDD/src/wlan_hdd_cfg80211.c
index 3648d82..718fc70 100644
--- a/CORE/HDD/src/wlan_hdd_cfg80211.c
+++ b/CORE/HDD/src/wlan_hdd_cfg80211.c
@@ -2771,10 +2771,10 @@
}
/*
- * FUNCTION: wlan_hdd_cfg80211_change_iface
+ * FUNCTION: __wlan_hdd_cfg80211_change_iface
* This function is used to set the interface type (INFRASTRUCTURE/ADHOC)
*/
-int wlan_hdd_cfg80211_change_iface( struct wiphy *wiphy,
+int __wlan_hdd_cfg80211_change_iface( struct wiphy *wiphy,
struct net_device *ndev,
enum nl80211_iftype type,
u32 *flags,
@@ -3197,6 +3197,26 @@
return 0;
}
+/*
+ * FUNCTION: wlan_hdd_cfg80211_change_iface
+ * wrapper function to protect the actual implementation from SSR.
+ */
+int wlan_hdd_cfg80211_change_iface( struct wiphy *wiphy,
+ struct net_device *ndev,
+ enum nl80211_iftype type,
+ u32 *flags,
+ struct vif_params *params
+ )
+{
+ int ret;
+
+ vos_ssr_protect(__func__);
+ ret = __wlan_hdd_cfg80211_change_iface(wiphy, ndev, type, flags, params);
+ vos_ssr_unprotect(__func__);
+
+ return ret;
+}
+
#ifdef FEATURE_WLAN_TDLS
static int wlan_hdd_tdls_add_station(struct wiphy *wiphy,
struct net_device *dev, u8 *mac, bool update, tCsrStaParams *StaParams)